CN101841202A - The balance ring of vehicular electric machine - Google Patents
The balance ring of vehicular electric machine Download PDFInfo
- Publication number
- CN101841202A CN101841202A CN201010136877A CN201010136877A CN101841202A CN 101841202 A CN101841202 A CN 101841202A CN 201010136877 A CN201010136877 A CN 201010136877A CN 201010136877 A CN201010136877 A CN 201010136877A CN 101841202 A CN101841202 A CN 101841202A
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- China
- Prior art keywords
- electric machine
- flat surfaces
- balance ring
- annular
- magnetic screen
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/04—Balancing means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49009—Dynamoelectric machine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49009—Dynamoelectric machine
- Y10T29/49011—Commutator or slip ring assembly
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49009—Dynamoelectric machine
- Y10T29/49012—Rotor
Abstract
The present invention relates to a kind of balance ring of vehicular electric machine.Particularly, provide the electric machine of use in vehicle, wherein said electric machine has housing.Electric machine comprises the stator module that is connected to housing, and is arranged in the stator module and is disposed for relative stator assembly rotor rotated assembly.Balance ring is connected to the end of rotor assembly and is disposed for therewith rotating.Balance ring comprises annular basic unit with first flat surfaces and the annular magnetic screen with second flat surfaces, and described second flat surfaces is coated to described first flat surfaces.
Description
Technical field
The present invention relates in general to a kind of vehicular electric machine, and the method that further relates to a kind of balance ring of vehicular electric machine and make this balance ring.
Background technology
In recent years, technological progress has caused the great variety of vehicle design.Complexity and power that one of these variations relate to the various electrical systems in the especially alternative fuel vehicle in the vehicle use.For example, sometimes except other power sources of for example explosive motor, for example the alternative fuel vehicle of motor vehicle driven by mixed power often uses for example electrochemical power source of battery, super capacitor and fuel cell, thereby provides power for the electric traction machine of drive wheels (comprising motor and motor/generator).
The axle that such electric machine is usually included in the fixed stator is gone up axial rotor rotated assembly.Because the rotor assembly of traction electric machine device can the thousands of commentaries on classics of per minute (rpm) the speed rotation, the slight abnormality in these assembly balances will cause the too early wearing and tearing of undesirable vibration, bearing and axle and shorten service life of a machine.For the balance under compensating this defective and keeping at a high speed, the endless metal balance ring with asymmetric distribution of weight is installed to and an one or both ends of concentric rotor usually.Described circle must be machined to and be used for along removing weight at specified point on its periphery, and described delineation is made and is used for the uneven of concrete rotor and compensates this imbalance.Ideally, balance ring is characterised in that the power that high mechanical properties is produced with high rpm rotation the time with tolerance, and low magnetic permeability (μ) thus improve overall machine efficiency with the magnetic flux that holds in the rotor assembly.The balance ring that is fabricated to the single structure form by for example stainless metal provides this two features, but too expensive.For example aluminium material relatively cheap and high magnetic screen can be provided, but in a lot of the application, do not have enough mechanical strengths.Other cheap materials for example carbon steel provide high mechanical strength but provide magnetic screen seldom or not is provided.
The double-deck plural equilibrium circle that is fabricated to that is made of two kinds of different powdery metals is used as a kind of mode that combines high magnetic screen and high mechanical properties.For example, have low μ first powdery metal (for example stainless steel) layer can with have low-cost and high-intensity second powdery metal (for example carbon steel) layer combines.This two-layer then by sintering together to be formed for concrete rotor by mach balance ring.Yet for example the metal of the such more common form of milled sheet is more expensive significantly than other for the metal of powder morphology.In addition, the stainless steel behind the sintering is tending towards work hardening in machining process, thereby makes it become special difficult to machine material.In addition, the balance ring behind the sintering is easy to cracking in this machining process.This cracking may be difficult to identification in manufacture process, and therefore can cause the fault of described circle when loading at a high speed.
So, be desirable to provide the cheap original material of a kind of utilization that is used for vehicular electric machine the balance ring with low magnetic permeability and high mechanical properties and.Further, wish that also this balance ring is easier to machine work and more is not easy to form cracking.Further, the feature of other hope of the present invention and characteristic in conjunction with the accompanying drawings with aforementioned technical field, background technology, will become obvious by the detailed description subsequently and the claim of enclosing.
Summary of the invention
According to embodiment, only as an example, provide the electric machine of a kind of use in vehicle, wherein electric machine has housing.Electric machine comprises the stator module that is connected to housing, and is arranged in the stator module and is configured for its rotor rotated assembly relatively.Balance ring is connected to the end of rotor assembly and is configured to therewith rotate.Balance ring comprises the annular basic unit with first flat surfaces, and the annular magnetic screen with second flat surfaces, and wherein second flat surfaces coats first flat surfaces.
Be provided for making the method for the balance ring of vehicular electric machine.According to one exemplary embodiment of the present invention, a kind of method may further comprise the steps: the first metal layer with first flat surfaces is provided, second metal level with second flat surfaces is provided and second flat surfaces is coated to first flat surfaces to form composite construction.
The invention provides the electric machine of a kind of use in vehicle, described electric machine has housing, and described electric machine comprises:
Be connected to the stator module of described housing;
Be arranged in the described stator module and be configured for respect to described stator module rotor rotated assembly; And
Be connected to the end of described rotor assembly and the balance ring that is configured for therewith rotating, described balance ring comprises:
Annular basic unit with first flat surfaces; And
Annular magnetic screen with second flat surfaces, described second flat surfaces is coated to described first flat surfaces.
According to an aspect of the present invention, described annular magnetic screen further comprises the 3rd flat surfaces of the end that is connected into contiguous described rotor assembly.
According to another aspect of the present invention, described annular magnetic screen comprises selected material from the group that comprises titanium, aluminium, stainless steel, copper, magnesium, chromium, zinc, manganese, molybdenum and alloy thereof.
According to another aspect of the present invention, described annular basic unit comprises carbon steel.
According to another aspect of the present invention, described annular magnetic screen have from about 1 times to about 2 times to the magnetic permeability of permeability of vacuum.
According to another aspect of the present invention, described annular magnetic screen have from about 1 times to about 1.2 times to the magnetic permeability of permeability of vacuum.
According to another aspect of the present invention, described annular basic unit has the thickness from about 1mm to about 20mm.
According to another aspect of the present invention, described annular magnetic screen has the thickness from about 0.1mm to about 10mm.
The present invention also provides a kind of balance ring, comprising:
First annulate lamella that comprises high-strength material, described first annulate lamella has first flat surfaces; And
Second annulate lamella that comprises low magnetic permeability material, described second annulate lamella has second flat surfaces that is coated to described first flat surfaces.
According to a further aspect of the invention, described second annulate lamella has the composition that is selected from from the group that comprises titanium, aluminium, stainless steel, copper, magnesium, chromium, zinc, manganese, molybdenum and alloy thereof.
According to a further aspect of the invention, described first annulate lamella comprises carbon steel.
According to a further aspect of the invention, described second annulate lamella have from about 1 times to about 2 times to the magnetic permeability of permeability of vacuum.
According to a further aspect of the invention, described second annulate lamella have from about 1 times to about 1.2 times to the magnetic permeability of permeability of vacuum.
The present invention also provides a kind of method that is used to make the balance ring of vehicular electric machine, and described method comprises the steps:
The first metal layer with first flat surfaces is provided;
Second metal level with second flat surfaces is provided;
Described second flat surfaces is coated to described first flat surfaces to form composite construction; And
A part that removes described composite construction is to form annular ring.
According to a further aspect of the invention, provide the described step of second metal level to comprise second metal level that comprises low magnetic permeability material is provided.
According to a further aspect of the invention, provide the described step of second metal level that comprises low magnetic permeability material to comprise and provide and comprise having about 1 times of second metal level that magnetic permeability is a permeability of vacuum to about 2 times material.
According to a further aspect of the invention, the described step that removes comprises by punching press and removing.
According to a further aspect of the invention, provide the step of second metal level that comprises material to comprise second metal level that comprises aluminium is provided with low magnetic permeability.
According to a further aspect of the invention, described method comprises that further the machine work annular ring is to form the step of described balance ring.
According to a further aspect of the invention, described vehicular electric machine also comprises the rotor with end, and described method further comprises the step that described balance ring is installed in the described end of described rotor.
Description of drawings
In conjunction with following accompanying drawing, by drawing more complete understanding of the present invention with reference to detailed description and claim, wherein identical Reference numeral is represented similar elements in institute's drawings attached, wherein:
Fig. 1 is the schematic diagram of example vehicle, shows the mode that embodiment is integrated with various vehicle subassemblies;
Fig. 2 is the schematic diagram of exemplary automobile-used traction electric machine device, and it uses with vehicle shown in Figure 1, and has the integrated balance ring according to exemplary embodiment;
Fig. 3 is the stereogram of balance ring shown in Figure 2;
Fig. 4 is the cross-sectional schematic of the exemplary balance circle of type shown in Fig. 2 and 3; And
Fig. 5-7 shows according to exemplary embodiment and uses clad material to make the schematic diagram of the method for balance ring.
Embodiment
Various embodiment of the present invention as herein described provide a kind of balance ring that is suitable for being assemblied in the rotor assembly of the electric machine on the vehicle, and the method for making this balance ring.Described electric machine can comprise generator or motor or their compound (motor/generator).Balance ring has plate or the made composite construction of foundry goods that is coated to metal-based layer by plate or foundry goods with magnetic masking layer.Magnetic masking layer helps to hold the magnetic flux in the rotor assembly in operating process, and it is characterized in that low magnetic permeability.Metal-based layer is made with the reduction total cost by relatively cheap material, and the high mechanical properties that is fit to bear the power that is produced by high rotating speed rotation is provided.The coating of plate/foundry goods metal provides with the powdery metal design of aforementioned sintering and compared the balance ring that is easier to machine work and more is not easy to ftracture in machining process.The metal of the plate/foundry goods form also powdery metal than same composition is more cheap significantly, thereby has reduced the total cost of balance ring.
Fig. 1 illustrates for example automobile 10 of vehicle according to an embodiment of the invention.Automobile 10 comprises chassis 12, vehicle body 14, four wheels 16 and electronic control systems (or electronic control part (ECU)) 18.Vehicle body 14 is arranged on the chassis 12 and surrounds the miscellaneous part of automobile 10 substantially.Vehicle body 14 and chassis 12 can jointly form vehicle frame.Each all is connected near the turning separately of vehicle body 14 chassis 12 rotatably wheel 16.
Automobile 10 can be a kind of in any dissimilar automobile, for example car, lorry, truck or motion vehicle (SUV), and can be two-wheel drive (2WD) (that is, rear wheel drive or front-wheel drive), four-wheel drive (4WD) or full wheel drive (AWD).Automobile 10 also can be in conjunction with any or its combination in the engine (or actuator) of following number of different types, for example (FFV) engine is (promptly for petrol engine or Diesel engine, " flexible fuel vehicle ", the mixture of use gasoline and ethanol), gaseous compound (for example, hydrogen and/or natural gas) engine fuel or fuel cell, burning/motor/generator hybrid power engine and motor.
In exemplary embodiment shown in Figure 1, automobile 10 is fuel-cell vehicles, and further comprises actuator component (or power train) 20, battery 22, battery charging state (SOC) system 24, power electronic cabin (PEB) 26 and radiator 28.Actuator 20 comprises internal combustion (IC) engine 30 and motor/generator (or traction motor/generator) system (or assembly) 32.Battery 22 is electrically coupled to PEB 26, and comprises lithium ion (Li-ion) battery in one embodiment, and described lithium battery comprises a plurality of primary cells, understands as common.Traction motor/generator assembly 32 generally includes a plurality of electronic units, and it comprises stator and rotor assembly.Rotor assembly comprises at least one balance ring, and it is fabricated to composition metal and coats, and the balance that is used for providing when high rotating speed rotates to rotor assembly is provided in case of necessity.In exemplary embodiment as shown in Figure 1, traction motor/generator assembly 32 is configured to the parts of actuator 20.Although this example, traction motor/generator assembly 32 can be used in other places in the vehicle 10 in alternative embodiment.For example, in certain embodiments, the traction motor generator assembly can place in the speed changer, or as the parts of belt transmission dyna-starter system (BAS), and is connected to the IC engine by belt or other suitable modes.
Schematically illustrated traction motor/the generator assembly 32 that has integrated balance ring 50 and 52 according to exemplary embodiment of Fig. 2.Traction motor/generator assembly 32 comprises stator 62, and stator 62 is included in the housing 54 and is fixedly connected to housing 54.Rotor assembly 58 rotatably is connected to stator 62, and roughly with stator 62 axis A-A on the axle (not shown) with one heart ' rotation.According to its design, assembly 58 can comprise that also the magnetic flux interaction that is configured for producing with stator 62 also is provided to moment of torsion a plurality of magnet 60 of rotor assembly 58 in a known way.First balance ring 50 and second balance ring 52 each all for example by interference fit, roughly with axis A-A ' be installed to the end opposite of rotor assembly 58 coaxially. Circle 50 and 52 is configured for compensating mass distribution asymmetric of rotor assembly 58, this otherwise can cause assembly 58 vibration when rotated.Each all is manufactured to two-layer composite circle 50 and 52, and this structure comprises two metallic plates and/or the foundry goods of the heterogeneity that is coated togather in the mode of describing in detail below.During operation, rotor assembly 58 is around axis A-A ' thus in stator coaxially the rotation produce mechanical energy.Balance ring 50 and 52 is with rotor assembly 58 rotations, and each circle all has asymmetric mass distribution, and it is configured for the rotation imbalance of balance/supplemental component 58.
Fig. 3 is the schematic diagram according to the balance ring 50 of exemplary embodiment.Balance ring 50 has annular shape, and it has overall diameter D1 and interior diameter D2, and comprises two-layer composite, and this two-layer composite comprises the ground floor 80 that is coated to the second layer 84.The ground floor 80 and the second layer 84 can have any thickness and the shape that is fit to be installed to rotor assembly 58 (Fig. 2).Circle 50 can have the recess 88 of any amount of the arbitrary shape that is machined in its surface or size, is coupled to assembly 58 and the unbalanced asymmetric mass distribution of rotation in the compensation assembly 58 when rotating with assembly 58 to be provided at.The machine work of recess 88 can be by drilling or milling or by finishing from enclosing 50 any other appropriate method of removing material in accurate mode.At run duration, balance ring 50 with the barycenter of rotor assembly 58 rotation and adjusting part 58 (it comprises circle 50 now) with axis A-A ' on more approaching coincidence of point (Fig. 2), thereby improve the spin balancing of assembly.Circle 50 further is configured for providing to the magnetic screen of rotor assembly 58 so that magnetic flux is contained in wherein, thereby improves the gross efficiency of motor/generator 32.
Here, one group of special technology of term " coating " expression is used for two kinds of sample metal levels are joined to together.Cladding process is usually directed to the metal level of two kinds of different components, and wherein metal level can comprise the continuous metal structure of any kind that forms by any way, for example forms the metallic plate sample or passes through the mode that casting forms the foundry goods metal sample by rolling.The surface that coating relates to two kinds of samples forms mutually contact closely, and uses contacting and strengthening interfacial joint of technology formation metals such as for example cold rolling joint, hot rolling joint, hot pressing, explosion engage, extruding joints and metal.Thereby suitable surface preparation can be carried out removing pollutant and/or metal oxide to coat on the metal sample of for example presoma.Coat and not comprise that sintering method is bonded together by for example using with powdery metal for example with the molecule of metal, or plate or casting sample are reached the joints such as welding, brazing of its melt temperature by making at least one sample.In addition, coat and not comprise and be used for any middle binding material that for example example interface ground engaged by bonding or welding.
Fig. 4 balance ring 50 according to exemplary embodiment schematically shown in section.Circle 50 comprises annular basic unit 84 and annular magnetic screen 80.92 places are coated to basic unit 84 with screen 80 at the interface in mode as mentioned below.Annular basic unit 84 has by any suitable method and for example drills or milling is formed into recess 88 in its surface.Recess 88 is at size and the position equilibrium response that will depend on mentioned above host rotor of circle on 50.Therefore, be shown as single recess 88, be to be understood that and use any amount of this recess with any appropriate size, shape and/or degree of depth with specific dimensions and shape although enclose 50.In addition, for concrete rotor or design, when needed, metal also can be implemented similarly from the machine work that annular magnetic screen 80 removes.
The schematically illustrated formation according to various exemplary embodiments according to the present invention of Fig. 5-7 has the method that the annular magnetic screen is coated to the balance ring 100 of annular high strength basic unit.With reference to figure 5, according to exemplary embodiment, this method is from providing basic unit 110 and magnetic masking layer 114.The size of layer 110 and 114 is suitable for treating the diameter of manufactured balance ring, and can have any suitable thickness.In one embodiment, basic unit 110 has the approximately thickness from 1 millimeter (mm) to about 20mm, and preferably thick to about 10mm from about 1mm.Magnetic masking layer 114 has the thickness from about 0.1mm to about 10mm, and preferably thick to about 5mm from about 1mm.Basic unit 110 has first surface 112, and can comprise any high duty metal that is suitable for coating, for example carbon steel.Magnetic masking layer 114 has second surface 116, and can comprise any metal with low μ, for example titanium, aluminium, stainless steel, copper, magnesium, chromium, zinc, manganese, molybdenum and alloy thereof.In one embodiment, magnetic masking layer 114 have from about 1 times to about 2 times to the μ of permeability of vacuum.In a preferred embodiment, magnetic masking layer 114 have from about 1 times to about 1.2 times to the μ of permeability of vacuum.Then, the surface preparation that is suitable for selected materials is implemented on surface 112 and 116 to remove the metal oxide that may occur or the pollutant of hydrocarbon for example thereon.This preliminary treatment can comprise in order to chemical treatment that removes these oxides and pollutant or for example sand milling or the milled processed of sandblast or the processing of above-mentioned both combinations.Sandblast also can be used to increase surface roughness and be beneficial to mechanical adhesion during coating is subsequently handled.Shown in double-head arrow 118, make surface 112 and 116 approaching subsequently.
After prepare on the surface, make layer 110 and 114 begin to contact with each other as shown in Figure 6.For example by any suitable technique for rolling pressure (shown in arrow 120) is applied on the layer 110 and 114, metal forms composite construction 122 to contacting of metal thereby feasible surface 112 and 116 forms closely each other.According to the overall craft that uses, also can be produced the adhesive joint intensity that coats to strengthen together with pressure application of heat (shown in arrow 124).
Then, as shown in Figure 7, annular ring 130 is formed by composite construction 122.Annular ring 130 can by use any suitable technology for example Sheet Metal Forming Technology remove a part of composite construction 122 and form.Annular ring 130 has overall diameter D1 and interior diameter D2 respectively, and its size depends on the size of host's rotor assembly.After the moulding, thereby annular ring 130 can for example be drilled in any suitable mode, milling comes machine work to remove material according to the needs that form final balance ring one or two from basic unit 110 and magnetic masking layer 114.Just like balance ring 50 being installed to rotor assembly 58 (Fig. 2), balance ring 100 is installed then, make magnetic masking layer 114 be arranged to the end of adjacent rotor assembly, so that the balance to its enhancing to be provided when rotated.
That each embodiment of the present invention described here provides a kind of rotor assembly that is used for vehicula motor/generator and have a manufacture method that magnetic masking layer is coated to the balance ring and the described balance ring of high duty metal basic unit.These exemplary embodiments also may be used on for example being provided in the motor in any kind vehicle or any suitable electric machine of generator.Magnetic masking layer can comprise plate or the foundry goods metal level with low magnetic permeability, and is configured to the adjacent rotor installation.Basic unit also can comprise plate or foundry goods layer, it is characterized in that high mechanical properties.The conventional cladding process of this two-layer use is bonded together, and makes balance ring by consequent composite construction.Final thus balance ring is incorporated in the single composite construction low magnetic permeability and high mechanical properties under the situation of not using expensive powdery metal.The plate or the casting material that are used for making consequent balance ring are easier to machine work and more not easy to crack.
Although in detailed description above, embodied at least one embodiment, will be clear that also to have various conversion.Will be clear that also exemplary embodiment described herein or a plurality of exemplary embodiment do not attempt by any way scope of the present invention, be suitable for or structure limits.On the contrary, above-detailed will provide the approach that makes things convenient for that realizes described embodiment or a plurality of embodiment to those skilled in the art.Should be appreciated that under the situation of the scope that does not break away from the present invention and law equivalent thereof, can make multiple conversion with disposing in the function of element.
Claims (10)
1. the electric machine of a use in vehicle, described electric machine has housing, and described electric machine comprises:
Be connected to the stator module of described housing;
Be arranged in the described stator module and be configured for respect to described stator module rotor rotated assembly; And
Be connected to the end of described rotor assembly and the balance ring that is configured for therewith rotating, described balance ring comprises:
Annular basic unit with first flat surfaces; And
Annular magnetic screen with second flat surfaces, described second flat surfaces is coated to described first flat surfaces.
2. electric machine as claimed in claim 1 is characterized in that, described annular magnetic screen further comprises the 3rd flat surfaces of the end that is connected into contiguous described rotor assembly.
3. electric machine as claimed in claim 1 is characterized in that, described annular magnetic screen comprises selected material from the group that comprises titanium, aluminium, stainless steel, copper, magnesium, chromium, zinc, manganese, molybdenum and alloy thereof.
4. electric machine as claimed in claim 1 is characterized in that, described annular basic unit comprises carbon steel.
5. electric machine as claimed in claim 1 is characterized in that, described annular magnetic screen have from about 1 times to about 2 times to the magnetic permeability of permeability of vacuum.
6. electric machine as claimed in claim 5 is characterized in that, described annular magnetic screen have from about 1 times to about 1.2 times to the magnetic permeability of permeability of vacuum.
7. electric machine as claimed in claim 1 is characterized in that, described annular basic unit has the thickness from about 1mm to about 20mm.
8. electric machine as claimed in claim 1 is characterized in that, described annular magnetic screen has the thickness from about 0.1mm to about 10mm.
9. balance ring comprises:
First annulate lamella that comprises high-strength material, described first annulate lamella has first flat surfaces; And
Second annulate lamella that comprises low magnetic permeability material, described second annulate lamella has second flat surfaces that is coated to described first flat surfaces.
10. method that is used to make the balance ring of vehicular electric machine, described method comprises the steps:
The first metal layer with first flat surfaces is provided;
Second metal level with second flat surfaces is provided;
Described second flat surfaces is coated to described first flat surfaces to form composite construction; And
A part that removes described composite construction is to form annular ring.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/402290 | 2009-03-11 | ||
| US12/402,290 US20100231064A1 (en) | 2009-03-11 | 2009-03-11 | Balance ring for a vehicular electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101841202A true CN101841202A (en) | 2010-09-22 |
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ID=42730107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010136877A Pending CN101841202A (en) | 2009-03-11 | 2010-03-11 | The balance ring of vehicular electric machine |
Country Status (3)
| Country | Link |
|---|---|
| US (2) | US20100231064A1 (en) |
| CN (1) | CN101841202A (en) |
| DE (1) | DE102010009317B4 (en) |
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| US20140091649A1 (en) * | 2012-10-02 | 2014-04-03 | Remy Technologies, Llc | Electromagnetic interference shield and balance ring for electrical machine |
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| CN104242570B (en) * | 2014-09-22 | 2017-02-01 | 东方电气集团东方汽轮机有限公司 | Segmented device for rotor butt joint assembly and method for conducting rotor butt joint assembly with device |
| KR102589672B1 (en) * | 2016-06-13 | 2023-10-16 | 엘지이노텍 주식회사 | Rotor and motor having the same |
| US11670975B2 (en) * | 2017-01-24 | 2023-06-06 | Lg Innotek Co., Ltd. | Motor having optimized gaps between magnets for improving cogging torque |
| CN108512355B (en) * | 2017-02-28 | 2020-10-16 | 日本电产株式会社 | Motor, power device and bulldozer |
| IT201800003491A1 (en) * | 2018-03-13 | 2019-09-13 | Magneti Marelli Spa | ROTOR FOR A ROTATING ELECTRIC MACHINE |
| US10811916B2 (en) * | 2018-06-22 | 2020-10-20 | Loon Llc | Bi-metal motor housing for high heat transfer with dimensional stability |
| DE102018121645A1 (en) * | 2018-09-05 | 2020-03-05 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Process for balancing rotors of electrical machines |
| EP4028205A4 (en) * | 2019-09-13 | 2023-10-04 | Ohio State Innovation Foundation | Methods for and devices prepared from shape material alloy welding |
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| TWM243848U (en) * | 2003-07-09 | 2004-09-11 | Sunonwealth Electr Mach Ind Co | Rotational balance structure for a motor |
| TWI279061B (en) * | 2005-04-18 | 2007-04-11 | Sunonwealth Electr Mach Ind Co | Rotor balance structure for motor |
| DE102007017342B4 (en) * | 2007-04-12 | 2012-01-26 | Compact Dynamics Gmbh | Energy storage for a land vehicle |
| US20090033160A1 (en) * | 2007-07-31 | 2009-02-05 | Daniel Mueller | Electric motor for hybrid or electric vehicle |
-
2009
- 2009-03-11 US US12/402,290 patent/US20100231064A1/en not_active Abandoned
-
2010
- 2010-02-25 DE DE102010009317.3A patent/DE102010009317B4/en not_active Expired - Fee Related
- 2010-03-11 CN CN201010136877A patent/CN101841202A/en active Pending
-
2011
- 2011-09-07 US US13/227,284 patent/US8276255B2/en not_active Expired - Fee Related
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| US4144469A (en) * | 1976-08-09 | 1979-03-13 | Hitachi, Ltd. | Stress protection for permanent magnet type synchronous motor |
| JPS622839A (en) * | 1985-06-27 | 1987-01-08 | Fanuc Ltd | Permanent magnet field rotor for ac motor |
| US4896813A (en) * | 1989-04-03 | 1990-01-30 | Toyo Kohan Co., Ltd. | Method and apparatus for cold rolling clad sheet |
| US5780945A (en) * | 1997-03-24 | 1998-07-14 | Emerson Electric Co. | Switched reluctance machine balancing system: material removal approach and material addition approach |
| US6727628B2 (en) * | 2000-09-28 | 2004-04-27 | Nissan Motor Co., Ltd. | Rotor structure for permanent-magnet motor |
| CN101192768A (en) * | 2006-11-30 | 2008-06-04 | 株式会社东芝 | Spindle motor and disk device provided with the same |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010009317B4 (en) | 2016-06-23 |
| US8276255B2 (en) | 2012-10-02 |
| US20100231064A1 (en) | 2010-09-16 |
| US20110314659A1 (en) | 2011-12-29 |
| DE102010009317A1 (en) | 2010-11-18 |
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Application publication date: 20100922 |